On my ping-pong team there are four times as many right-handed boys as left-handed boys. Of the students on the team who are left-handed, there are twice as many girls as there are boys. Half of the girls who are on the team are left-handed. If there are 36 people on the team, how many are right-handed boys?

wiskdls  Apr 29, 2018

Let the number of left-handed boys be . Since there are four times as many right-handed boys, the number of right-handed boys is . Since there are twice as many left-handed girls as left-handed boys, and there are  left-handed boys, there are  left-handed girls. We place all of this in a Venn diagram:

We also know that half the girls on the team are left-handed. Since there are  left-handed girls, there are also  right-handed girls.

There are a total of 


people on the team, so x=4. We are trying to find the number of right-handed boys. This number is


ameya  Jul 14, 2018

19 Online Users


New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.